The document summarizes key findings from Aon Hewitt's 2015 Global Trends in Employee Engagement report. It shows that employee engagement levels vary widely across markets from 38-73% and can change by 6-15% year-over-year. The best performing companies have 8-10% higher total shareholder return and 29% higher operating income when they invest in engaging leaders. However, only about half of employees have a favorable view of the top engagement drivers like growth opportunities, reputation, pay, and innovation. The report concludes that the best companies build a culture of engagement led by CEOs who understand engagement is critical to business results.